added topics for simple-cipher, resolves #835
added topics for simple-cipher, resolves #835

mweb/python,pheanex/xpython,jmluy/xpython,exercism/xpython,mweb/python,behrtam/xpython,exercism/xpython,smalley/python,N-Parsons/exercism-python,pheanex/xpython,exercism/python,N-Parsons/exercism-python,smalley/python,exercism/python,jmluy/xpython,behrtam/xpython